What Is the Prognosis for a 90-Year-Old with a Broken Hip?

A hip fracture at 90 is a serious, life-altering event, but it is not an automatic death sentence. Roughly half of patients over 90 survive the first year after a hip fracture, though the range varies widely depending on the person’s health before the break. That survival figure is sobering, but it also means half do make it through, and many of those go on to live meaningful months or years. The prognosis depends heavily on factors that existed before the fracture itself, particularly how frail the person was, whether they had dementia, and how quickly they receive surgery.

What the Mortality Numbers Actually Look Like

The one-year mortality rate after hip fracture in people aged 90 and older is consistently higher than in younger elderly patients, though the exact figures differ across studies and populations. A Brazilian study of patients over 90 found that about 55% died within one year of surgery, including roughly 3.5% who died during the initial hospital stay.¹ A study from Taiwan reported a somewhat lower one-year mortality of 24% in patients 90 and older, compared with 10% in younger hip fracture patients.² An Italian study of patients over 85 found a one-year survival rate of about 55% in the oldest patients, with roughly double the mortality risk compared to those in their seventies and early eighties.³

These numbers span a wide range, and that variation is itself part of the answer. A 90-year-old who was walking independently, living at home, and cognitively sharp before the fracture has a very different outlook from someone who was already bed-bound or living with advanced dementia. The fracture itself is not usually what kills; it is the cascade of complications that follows, combined with whatever vulnerabilities the person carried into the hospital.

Why Pre-Fracture Health Matters More Than Age Alone

Frailty is the single strongest predictor of how a 90-year-old will fare after a hip fracture. A systematic review of observational studies found that frail patients had roughly four times the 30-day mortality risk compared to non-frail patients, and about 50% higher one-year mortality. Frailty also dramatically increased the likelihood of complications, delirium, and pneumonia.⁴ Patients with high frailty scores also stayed about 55% longer in the hospital.⁵

A Spanish study comparing patients aged 85–89 with those 90 and older found the older group was significantly more dependent and frailer before the fracture. Their one-year survival was 76%, compared with 91% in the younger group. In-hospital complications were also more common in the very elderly.⁶ But notice: 76% one-year survival is far better than the roughly 45–55% seen in the Brazilian cohort. The difference likely reflects the pre-fracture health of the populations studied, not just nationality or healthcare quality. When you see prognosis statistics, the question to ask is always: how healthy was this person before the fall?

Dementia and Cognitive Impairment

Dementia is especially common among very old hip fracture patients, and it changes the prognosis substantially. A large study found that one-year mortality climbed steeply with the severity of cognitive impairment: about 21% in cognitively intact patients, 32% in those with mild dementia, 46% with moderate dementia, and over 53% with severe dementia. Walking ability at six months also dropped with each level of cognitive decline.⁷

This does not mean dementia should rule out treatment. A large study of people living with dementia who had hip fractures found that surgery was associated with substantially lower mortality at 30, 90, and 180 days compared with non-surgical management, even after adjusting for other health differences.⁸ A separate systematic review found that patients with mild to moderate dementia who received rehabilitation showed similar relative functional gains as those without dementia.⁹ So while dementia worsens the statistical outlook, it does not erase the benefit of surgery and rehab. The conversation shifts toward what quality of life is achievable, not whether treatment is worthwhile.

Surgery Versus Non-Operative Management

For most 90-year-olds with a hip fracture, surgery is recommended. The evidence consistently shows that surgical treatment leads to better outcomes than conservative management. One study found that non-operative patients had four times the one-year mortality risk and three times the two-year risk compared to those who had surgery.¹⁰ Even in very old patients, surgery significantly improves the ability to walk independently afterward.¹¹

There is, however, a subset of patients for whom surgery may not be the right choice. A trial of frail, institutionalized patients (median age 88) found that those who opted for non-operative management had an 83% 30-day mortality rate, versus 25% in the surgical group. Yet among those who chose comfort care, over half of their proxy caregivers rated the quality of dying as good to almost perfect, and treatment satisfaction was high in both groups.¹² The stark mortality gap underscores how consequential this decision is, but it also shows that for patients who are already at the end of life, a well-managed non-operative path with good pain control can be a compassionate choice. These decisions are deeply personal and benefit from honest conversations with the medical team early on.

Timing of Surgery

When surgery is the plan, getting it done quickly matters. A meta-analysis covering more than 190,000 patients found that operating within 48 hours was associated with about a 26% lower risk of death compared to later surgery. Delayed surgery also significantly increased the risk of pressure sores.¹³ Another systematic review and meta-analysis confirmed that early surgery within 48 hours reduced one-year mortality by about 20% and resulted in fewer perioperative complications.¹⁴

The reason is straightforward: lying immobilized in a hospital bed is dangerous for very old patients. Every additional day spent waiting increases the risk of blood clots, pneumonia, pressure injuries, and delirium. Most hip fracture guidelines now recommend surgery within 24 to 48 hours whenever the patient can be medically stabilized in that window.

Perioperative Complications

Patients over 90 face higher surgical risks than younger elderly patients, though not prohibitively so. A large analysis of nonagenarians found an overall serious adverse event rate of about 20%, compared with roughly 15% in patients under 90. Nonagenarians had a higher risk of needing blood transfusions, developing pneumonia, cardiac complications, and death during hospitalization.¹⁵ Cardiac complications are especially dangerous in this age group; one study found that sustaining a cardiac complication after hip fracture surgery was associated with a roughly 16-fold increase in mortality risk.¹⁶

Delirium is another frequent and underappreciated complication. About a quarter of all patients admitted with a hip fracture experience an acute episode of delirium, and the risk is higher in the very old.¹⁷ Delirium increases mortality, extends hospital stays, and can cause lasting cognitive decline. Patients who are older, have pre-existing cognitive impairment, take multiple medications, or experience delayed surgery are at greatest risk.¹⁸ A history of dementia is one of the strongest individual risk factors: over half of delirium patients in one study had pre-existing dementia, compared with about 14% of those who did not become delirious.¹⁹

Spinal Versus General Anesthesia

Families often ask whether spinal anesthesia is safer than general anesthesia for an elderly person. The answer, based on the best available evidence, is that it does not seem to matter much. A large randomized trial published in the New England Journal of Medicine compared spinal and general anesthesia in older hip fracture patients and found no meaningful difference in the combined outcome of death or inability to walk at 60 days. Delirium rates were also similar between the two groups.²⁰ A follow-up analysis extending to one year found no difference in survival, walking ability, or the likelihood of transitioning to a nursing home.²¹ A separate systematic review of contemporary trials confirmed these findings, with the only notable difference being a reduced risk of acute kidney injury with spinal anesthesia.²²

The practical takeaway: families should not delay surgery to wait for a specific anesthesia type, and anesthesiologists can choose whichever approach best suits the patient’s medical situation.

Functional Recovery and Getting Back on Your Feet

Survival is only part of the picture. For many families, the real question is whether their loved one will walk again or be able to return home. Walking ability at discharge worsens as age increases, and research consistently shows that patients who do not regain ambulation fare significantly worse over the following months and years.²³

An older but informative study looked specifically at rehabilitation outcomes in patients 90 and older. Among those who survived their initial recovery, about 63% regained independent walking (with a walker or cane), and 44% returned home. At the one-year follow-up, most of those who survived were still walking independently.²⁴ These are small numbers from a single study, but they offer a reality check against the assumption that no one this age recovers meaningful function.

Early mobilization after surgery is one of the strongest levers for better functional outcomes. Getting patients out of bed and bearing weight as soon as safely possible shortens hospital stays, improves walking ability, and reduces pain.²⁵ For a 90-year-old, this does not mean aggressive physical training on the day of surgery. It means sitting up, standing at the bedside, and taking supervised steps with support as early as the first or second postoperative day. The goal is to break the cycle of immobility that leads to muscle wasting, blood clots, and pressure sores.

Nursing Home Admission

A hip fracture is one of the most common triggers for a 90-year-old to move from independent or semi-independent living into a nursing home. A Danish nationwide study found that among patients aged 90 to 100, about 22% were newly admitted to a nursing home within one year of hip fracture surgery. Living alone and dementia were independent risk factors for this transition.²⁶

A retrospective cohort study found that 42% of hip fracture patients overall required new nursing home admission, with the highest probability of placement occurring in the first nine months after surgery. The single strongest predictor of nursing home admission was failing to regain the ability to walk within three months of surgery.²⁷ This reinforces how critical rehabilitation and early mobility are: the first few months represent a window in which walking ability can be regained or lost, with lasting consequences for where the person will live.

The Orthogeriatric Model of Care

How the hospital organizes care around a 90-year-old hip fracture patient also affects outcomes. Orthogeriatric care, where orthopedic surgeons and geriatric medicine specialists co-manage patients from admission through discharge, has been shown to lower both in-hospital and one-year mortality. A meta-analysis found that orthogeriatric models reduced in-hospital death by about 28%, one-year mortality by 14%, and delirium by 19%, while also shortening hospital stays.²⁸ An earlier meta-analysis reported an even larger reduction in in-hospital mortality of about 40%.²⁹

The specifics vary from hospital to hospital, but the principle is that very old patients benefit from having a geriatrician actively managing their medications, nutrition, delirium risk, pain control, and rehabilitation plan alongside the surgeon who fixes the bone. If you are choosing a hospital for an elderly relative with a hip fracture, asking whether they have an orthogeriatric program is one of the most useful questions you can ask.

Nutrition and Secondary Prevention

Malnutrition is extremely common among very old hip fracture patients and worsens recovery. A Cochrane review found that oral nutritional supplements started around the time of surgery reduced unfavorable outcomes and complications such as wound infections and pressure sores, though the evidence was not strong enough to show a mortality benefit.³⁰ In practice, ensuring adequate protein and calorie intake during and after hospitalization is one of the simpler interventions that families and care teams can focus on.

Osteoporosis treatment after the fracture also deserves attention, even in very old patients. A study found that taking osteoporosis medications for more than 90 days was associated with a reduced risk of subsequent fracture, and this held even among frail individuals.³¹ The risk of a second hip fracture is real, and starting bone-protective treatment is often overlooked in the chaos of acute care and rehabilitation.

Goals-of-Care Conversations and Palliative Support

For the most frail patients, the right question is not always “what does surgery offer?” but “what does this person want from whatever time remains?” A scoping review of end-of-life decision-making after hip fracture found that the most commonly recommended strategy was holding goals-of-care discussions early, ideally involving a multidisciplinary team. About a third of the literature focused on comfort care, with pain relief and mobilization protocols as the most frequently cited interventions.³²

Palliative care is not synonymous with giving up. For a 90-year-old who is going to have surgery, palliative input can help manage pain, prevent delirium, and ensure the patient’s preferences are honored throughout recovery. For someone who opts against surgery, a palliative team can provide nerve blocks, positioning strategies, and medication regimens that control pain far better than simply leaving the fracture untreated without a plan. These conversations are most productive when they happen early and involve the patient (if capable), family members, and clinicians together.

The Burden on Family Caregivers

A hip fracture at 90 does not happen to one person alone; it reshapes the lives of whoever provides care afterward. A study from Taiwan found that over 90% of caregivers reported sadness at watching their elderly relative’s health decline, 85% felt they needed to watch the person constantly, and over half reported feeling physically exhausted. Caregivers who lacked access to outside help and those who had already been providing care before the fracture reported the highest burden.³³

A Scandinavian study found that about half of caregivers reported a high level of burden one month after their relative’s surgery. The proportion decreased to about a quarter by one year, but the strongest predictors of lasting caregiver strain were the patient’s low pre-fracture function, postoperative complications, older patient age, and, interestingly, younger caregiver age.³⁴ Younger caregivers, often adult children or grandchildren juggling work and their own families, may feel the disruption more acutely. Planning for the post-hospital period before discharge, including home health services, rehab facility placement, and respite care, can make a real difference in sustaining the people who sustain the patient.

Disparities in Care

Not everyone gets the same quality of hip fracture care, and the differences affect outcomes. A large U.S. study found that Black patients had about 50% higher odds of experiencing delayed surgery compared to white patients, along with increased risks of reoperation, hospital readmission, and one-year mortality. Insurance type mattered too: Medicaid patients were more likely to experience surgical delays, while privately insured patients had lower risks of complications, readmission, and death.³⁵ Given the strong evidence that surgical timing affects mortality, these delays are not just inequities on paper; they translate into preventable deaths. Advocacy for timely surgery is especially important for patients who face systemic barriers to receiving it.